EP2584572A1 - Static electromagnetic apparatus - Google Patents

Static electromagnetic apparatus Download PDF

Info

Publication number
EP2584572A1
EP2584572A1 EP10853176.5A EP10853176A EP2584572A1 EP 2584572 A1 EP2584572 A1 EP 2584572A1 EP 10853176 A EP10853176 A EP 10853176A EP 2584572 A1 EP2584572 A1 EP 2584572A1
Authority
EP
European Patent Office
Prior art keywords
cores
core
hollow
rod
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10853176.5A
Other languages
German (de)
English (en)
French (fr)
Inventor
Tsutomu Kominami
Kazumasa Ide
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP2584572A1 publication Critical patent/EP2584572A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/12—Magnetic shunt paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/25—Magnetic cores made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps

Definitions

  • the present invention relates to static electromagnetic apparatus such as a reactor and a transformer in which core structure is improved.
  • a silicon steel plate is rapped and is laminated to form it; however, the silicon steel plate has problems, for example, it has large core loss and it has large magnetostriction and makes a loud noise.
  • FINEMET registered trademark of Hitachi Metals, Ltd.
  • a core When a core is configured using a thin film conductor of amorphous, FINEMET, or the like, it is formed by winding a plurality of times the thin film conductor on a coil former, and the core thus formed is a hollow core in which the thin film conductor is accumulated in the circumferential direction.
  • a core to be employed in a reactor and a transformer is produced in a configuration in which a plurality of hollow cores is combined with each other.
  • Patent literature 1 describes an example of static electromagnetic apparatus such as a reactor and a transformer using a circumferentially accumulated hollow core.
  • PATENT LITERATURE 1 JP-A-2010-87536
  • FIG 12 shows a conventional, circumferentially accumulated hollow core which is described in patent literature 1.
  • FIG 12A shows a two-limb core in which a winding (not shown) is provided on two limb sections 1L of one circumferentially accumulated core 1, to thereby configure single-phase static electromagnetic apparatus.
  • a gap adjusting section 7 is disposed in a part of the accumulated core depending on cases.
  • FIG 12B is an example of the product of a three-limb core in which the limb sections 1L of two circumferentially accumulated cores 1 are arranged adjacent to each other to configure three limb sections and then three windings (not shown) are provided thereon, to thereby configure three-phase static electromagnetic apparatus.
  • the static electromagnetic apparatus in the shape of FIG. 12B has large lateral width and small depth; hence, to install it as apparatus, there exists a problem of installability.
  • the present invention has been proposed to improve the drawback described above and its object is to increase the degree of freedom of core structure.
  • the present invention is static electromagnetic apparatus comprising a plurality of hollow cores formed in a hollow shape and a plurality of rod cores disposed between the plurality of hollow cores to bring the hollow surfaces thereof in opposition with each other, wherein a winding is provided on a part of the cores.
  • the core is favorably formed by accumulating thin film conductors.
  • rod cores arranged between a plurality of hollow cores to bring the hollow surfaces thereof in opposition with each other are a plurality of rod cores connected in series to each other.
  • FIG 1 is a solid view showing a first embodiment of the present invention.
  • FIG 1 shows a first embodiment of the present invention.
  • 1 is a hollow rolled core in which the central portion is a hollow and 2 is a rod rolled core, and this is an example in which a four-limb core is configured by arranging, for example, four rod cores 2 between two hollow rolled cores 1a and 1b to bring the hollow surfaces of the hollow rolled cores in opposition with each other.
  • the hollow cores 1a and 1b and the rod rolled cores 2 are respectively formed by accumulating thin film conductors in the radial direction.
  • this core is employed for a transformer or a reactor, a winding is concentrically provided on four rod rolled cores 2.
  • connecting sections between the hollow cores 1a and 1b and the rod cores 2 may be employed as gap adjusting sections 3.
  • a gap may be disposed by completely adhering the gap adjusting section 3 or by adhering with an insulator interposed therebetween; or, by disposing a vacant space therein.
  • FIG 2 shows a second embodiment of the present invention.
  • a two-limb core configured by piling up the rod core 2 in two stages.
  • a gap adjusting section 4 exists at a place where the rod cores 2 are piled up; hence, by taking measures, for example, by completely adhering this section according to necessity or by adhering with an insulator interposed therebetween; or, by disposing a vacant space therein, it is possible to adjust the gap.
  • the second embodiment by piling up two or more rod cores 2, it is possible to arbitrarily produce the place in which the gap is disposed.
  • FIG 3 shows a third embodiment of the present invention.
  • the same symbols are employed.
  • the rod core 2a is configured by one rod core, and the rod core 2a may be divided like the other one limb.
  • a gap adjusting section 4 exists, and it is possible to adjust the gap by completely adhering this section or by interposing an insulator therebetween or by inserting a vacant space therein.
  • an arbitrary gap By configuring limbs by use of at least two rod cores piled up as above and one or more rod cores, it is possible to arbitrarily produce the place in which the gap is disposed.
  • that an arbitrary gap can be disposed means that an arbitrary B-H characteristic curve is obtained when a static electromagnetic apparatus such as a reactor, a transformer, or the like is configured by using this core.
  • FIG 4 is shows a fourth embodiment of the present invention.
  • one hollow core 1c is added to FIG 2 , to implement a three-stage configuration.
  • the present embodiment shows a two-limb core configured by employing three hollow cores 1 and four rod cores 2.
  • a gap adjusting section 3 exists also between a hollow core 1c and the upper and lower rod cores. Also in this part, by completely adhering the section or by interposing an insulator therebetween; or by disposing a vacant space therein, it is possible to adjust the gap.
  • FIG 5 shows a fifth embodiment of the present invention.
  • a two-limb core is configured by employing two hollow cores and two rod cores, and this is basically the same form as for FIG 1 , but differs therefrom in that cut sections are disposed in the hollow cores 1a and 1b for gap adjusting sections 5.
  • FIG 6 shows a sixth embodiment of the present invention.
  • FIG 6A is a diagram showing a solid configuration of static electromagnetic apparatus
  • FIG 6B is a diagram showing an A-A crosssection of FIG 6A , and for the same components as those of the first to fifth embodiments, the same symbols are employed.
  • the present embodiment shows a configuration implemented by disposing a winding 8 on each limbs in the cores of FIG. 1 in which four limbs are provided by using two hollow cores and four rod cores.
  • FIG 7 shows a seventh embodiment of the present invention.
  • the present embodiment shows a plan view of a configuration of a three-limb core using two hollow cores and three rod cores and shows a configuration in which two windings are disposed on each limb.
  • the present embodiment is applied to a three-phase transformer, the respective windings are used for U, V, and W phases.
  • the present embodiment may also be applied to a single-phase transformer by using the respective windings (example: windings 9a and 9b) as the primary and secondary windings.
  • the embodiment when the embodiment is employed for a single-phase transformer, it is also possible as in the seventh embodiment that one winding is provided on each limb.
  • FIG 8 shows an eighth embodiment of the present invention.
  • FIG 8A is a diagram showing a solid configuration of static electromagnetic apparatus
  • FIG 8B is a diagram showing a plan view of FIG. 8A , and for the same components as those of the first to seventh embodiments, the same symbols are employed.
  • a cooler 10 is arranged on the concentric axis of the hollow core 1. By this cooler 10, it is possible to cool the windings and the cores.
  • this embodiment shows an arrangement of one cooler tightly close to a rod core 1a; however, it is also possible that a plurality of coolers are arranged tightly close to a rod core 1b or between two rod cores.
  • FIG 9 shows a ninth embodiment of the present invention.
  • the present embodiment shows a plan view of a configuration of a two-limb core using two hollow cores and two rod cores and shows a configuration in which two windings 11a and 11b are disposed on the hollow core 1.
  • this configuration may be combined with that shown in the embodiment described above in which the windings 8a and 8b are disposed on the rod core 2.
  • FIG 10 shows a tenth embodiment of the present invention.
  • the static electromagnetic apparatus configured by standing several rod cores 2a and 2b provided with windings 8a and 8b on a hollow core 1b and by placing another hollow core 1a on upper sections thereof is housed in a case 12, and is fixed to be installed on a base 13 together with the case by use of fixing bolts 14. In this way, the cores are interposed between the case 12 and the base 13 on which the cores are attached, and then the cores are fixed.
  • a circular hollow core 1 is employed in any case; however, the core may be rectangle or triangle as shown in FIG 11 .
  • the magnetic material employed in this situation includes not only a thin film conductor such as amorphous, FINEMET, or the like, but it is also possible to employ an item produced by accumulating silicon steel plates or a dust core.
  • the core of the present invention as a circuit configuration member of a power converting device or the like, it is possible to contribute to the downsizing.
  • the present invention it is possible to implement static electromagnetic apparatus having excellent installability; hence, the present invention is applicable to static electromagnetic apparatus in a wide range of fields.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP10853176.5A 2010-06-16 2010-06-16 Static electromagnetic apparatus Withdrawn EP2584572A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/004008 WO2011158290A1 (ja) 2010-06-16 2010-06-16 静止電磁機器

Publications (1)

Publication Number Publication Date
EP2584572A1 true EP2584572A1 (en) 2013-04-24

Family

ID=45347723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10853176.5A Withdrawn EP2584572A1 (en) 2010-06-16 2010-06-16 Static electromagnetic apparatus

Country Status (4)

Country Link
EP (1) EP2584572A1 (ja)
JP (1) JPWO2011158290A1 (ja)
CN (1) CN102939633A (ja)
WO (1) WO2011158290A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775488A4 (en) * 2011-10-31 2015-07-08 Hitachi Ltd REACTOR, TRANSFORMER AND POWER CONVERTER DEVICE WITH IT
US10699838B2 (en) 2017-07-04 2020-06-30 Fanuc Corporation Reactor and method for production of core body
US10741319B2 (en) 2017-07-12 2020-08-11 Fanuc Corporation Three-phase reactor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5933012B2 (ja) * 2012-08-28 2016-06-08 株式会社日立製作所 電力変換装置
IL225693A0 (en) * 2013-04-11 2013-09-30 Eliezer Adar Three-phase choke and the manufacturing method
JP6337463B2 (ja) * 2013-12-19 2018-06-06 スミダコーポレーション株式会社 コイル部品およびコイル部品セット
CN107705969A (zh) * 2016-08-08 2018-02-16 杭州中恒电气股份有限公司 一种新的电感磁芯
CN107705957A (zh) * 2016-08-08 2018-02-16 杭州中恒电气股份有限公司 新型的集成电感
JP6674062B2 (ja) * 2019-05-22 2020-04-01 ファナック株式会社 三相リアクトル

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6125224Y2 (ja) * 1978-03-13 1986-07-29
JPS5860912U (ja) * 1981-10-19 1983-04-25 松下電工株式会社 電磁装置のコア
JPH0452976Y2 (ja) * 1986-11-04 1992-12-14
JPH02129716U (ja) * 1988-04-20 1990-10-25
JPH04345009A (ja) * 1991-05-22 1992-12-01 Daihen Corp 空隙付リアクトル鉄心及びその製造方法
JPH099499A (ja) * 1995-06-19 1997-01-10 Hitachi Ltd 限流器
CN1897175B (zh) 2005-07-08 2012-07-18 株式会社日立产机系统 静止装置用铁芯和静止装置
CN2870104Y (zh) * 2006-02-14 2007-02-14 苏州安泰变压器有限公司 新型卷铁心三相变压器
CN201421770Y (zh) * 2009-06-08 2010-03-10 吴茂安 开口式三角形变压器铁芯

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011158290A1 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775488A4 (en) * 2011-10-31 2015-07-08 Hitachi Ltd REACTOR, TRANSFORMER AND POWER CONVERTER DEVICE WITH IT
US10699838B2 (en) 2017-07-04 2020-06-30 Fanuc Corporation Reactor and method for production of core body
US10937587B2 (en) 2017-07-04 2021-03-02 Fanuc Corporation Reactor and method for production of core body
US10741319B2 (en) 2017-07-12 2020-08-11 Fanuc Corporation Three-phase reactor

Also Published As

Publication number Publication date
WO2011158290A1 (ja) 2011-12-22
JPWO2011158290A1 (ja) 2013-08-15
CN102939633A (zh) 2013-02-20

Similar Documents

Publication Publication Date Title
EP2584572A1 (en) Static electromagnetic apparatus
US10115514B2 (en) Three-phase high frequency transformer
EP2711944A1 (en) Reactor device and power converter employing same
CN103890874A (zh) 电抗器、变压器及使用该电抗器、变压器的电力转换器
US9263181B2 (en) Multi-phase transformer and transformation system
KR101377384B1 (ko) 110킬로 볼트 및 이상의 전압등급 입체 삼각형 권철심 전력 변압기
CN103093942A (zh) 非晶铁芯变压器
US10403429B2 (en) Multi-pulse electromagnetic device including a linear magnetic core configuration
CN104021920A (zh) 耦合电感和功率变换器
US7176779B2 (en) Inductor arrangement
JP5018945B2 (ja) マルチヘッド形コア付きリニアモータ
CN110690033A (zh) 线性电磁装置
US20140266535A1 (en) Low loss inductor with offset gap and windings
KR101173632B1 (ko) 전력 품질 개선 장치 및 전력 공급 시스템
EP2439755A1 (en) Dry-type electrical transformer
EP2400513A1 (en) Magnetic shielding for transformers
US6326877B1 (en) Transformer coil support structure
CN104081481A (zh) 变换器芯
US20140085757A1 (en) Surge blocking inductor
CN210271966U (zh) 端板粘接绝缘结构
US10325712B2 (en) Adjustable integrated combined common mode and differential mode three phase inductors with increased common mode inductance and methods of manufacture and use thereof
CN112420335B (zh) 一种分段绝缘多相柱中频变压器及级联式电力电子变压器
JPH0742959U (ja) 多段盤状巻線
JP2005072160A (ja) アモルファス鉄心変圧器及び三相五脚巻鉄心変圧器
US11749451B2 (en) Electrical transformer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130115

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20140611